What is Cargo Ventilation and its types?

Cargo ventilation:

  • Ventilation to the holds may be:
  • Mechanical or forced draft ventilation – where fans which can normally run in both directions are provided
  • Natural ventilation – where ventilation results from the natural movement of air caused by the wind blowing, the ship’s motion, or the circulation of air resulting from temperature differences.
Purpose of  ventilation :

Bulk cargoes are ventilated:

  • To prevent the formation of cargo sweat or ship’s sweat which could damage the cargo such as for grain and steel
  • To reduce the harmful heating of the cargo such as for grain and coal
  • To remove hazardous gases such as for coal
  • To remove moist air and replace it with drier air to discourage the formation of sweat


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